Free AI token counter
AI Token Counter
Count tokens, words, and characters in prompts, documents, and code. See where the text splits into tokens; your text stays in your browser.
Tokenization guideToken visualization
Text is processed in your browser, not sent to our counting API. One reference tokenizer is used for this count. Model-specific tokenizers, message formatting, and tool definitions can change the billed total.
Common questions
What is an AI token counter?
An AI token counter measures how many tokens a piece of text becomes when processed by a large language model. This page counts tokens, words, characters, and characters without spaces instantly, right in your browser.
How is a token counter different from a token calculator?
This counter focuses on text: token count, words, characters, and visible token boundaries. The homepage adds input-cost estimates and a model comparison chart. For a request budget with separate input, cached input, and output counts, use the token cost calculator.
Which models does this token counter support?
The counter uses one reference tokenizer, not a different tokenizer for every model. It is useful for inspecting prompts, but OpenAI, Claude, and Gemini may tokenize the same text differently. Provider-specific message formatting also affects the billed count.
Is there a limit to how much text I can count?
The browser counter handles long documents comfortably because counting runs locally with a background worker. Extremely large pastes may take a moment on slower devices.
Does the token counter upload my text?
No. Everything runs locally in your browser. Pasted text is never sent to any server for the counting tool.
Why do I need to count tokens?
Token counts decide whether a prompt fits a model's context window and how much an API call will cost. Counting before you send avoids truncated requests and surprise bills.
Need counting in your app?
The browser calculator is free. Token API access costs $1.99 monthly or $9.99 yearly.
Explore the Token API